68998545 has 48 divisors (see below), whose sum is σ = 149116032. Its totient is φ = 28673280.

The previous prime is 68998487. The next prime is 68998549. The reversal of 68998545 is 54589986.

It is a happy number.

68998545 is a `hidden beast` number, since 6 + 8 + 9 + 98 + 545 = 666.

It is not a de Polignac number, because 68998545 - 2¹⁰ = 68997521 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 68998491 and 68998500.

It is not an unprimeable number, because it can be changed into a prime (68998549) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 6492 + ... + 13421.

It is an arithmetic number, because the mean of its divisors is an integer number (3106584).

Almost surely, 2^68998545 is an apocalyptic number.

It is an amenable number.

68998545 is an abundant number, since it is smaller than the sum of its proper divisors (80117487).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

68998545 is a wasteful number, since it uses less digits than its factorization.

68998545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19942 (or 19939 counting only the distinct ones).

The product of its digits is 3110400, while the sum is 54.

The square root of 68998545 is about 8306.5362817482. The cubic root of 68998545 is about 410.1537099652.

The spelling of 68998545 in words is "sixty-eight million, nine hundred ninety-eight thousand, five hundred forty-five".